git.oblomov.eu Git - linux-2.6/blob - drivers/media/video/sn9c102/sn9c102_tas5110c1b.c

   1 /***************************************************************************
   2  * Plug-in for TAS5110C1B image sensor connected to the SN9C1xx PC Camera  *
   3  * Controllers                                                             *
   4  *                                                                         *
   5  * Copyright (C) 2004-2007 by Luca Risolia <luca.risolia@studio.unibo.it>  *
   6  *                                                                         *
   7  * This program is free software; you can redistribute it and/or modify    *
   8  * it under the terms of the GNU General Public License as published by    *
   9  * the Free Software Foundation; either version 2 of the License, or       *
  10  * (at your option) any later version.                                     *
  11  *                                                                         *
  12  * This program is distributed in the hope that it will be useful,         *
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of          *
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           *
  15  * GNU General Public License for more details.                            *
  16  *                                                                         *
  17  * You should have received a copy of the GNU General Public License       *
  18  * along with this program; if not, write to the Free Software             *
  19  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.               *
  20  ***************************************************************************/
  21
  22 #include "sn9c102_sensor.h"
  23 #include "sn9c102_devtable.h"
  24
  25
  26 static int tas5110c1b_init(struct sn9c102_device* cam)
  27 {
  28         int err = 0;
  29
  30         err = sn9c102_write_const_regs(cam, {0x01, 0x01}, {0x44, 0x01},
  31                                        {0x00, 0x10}, {0x00, 0x11},
  32                                        {0x0a, 0x14}, {0x60, 0x17},
  33                                        {0x06, 0x18}, {0xfb, 0x19});
  34
  35         err += sn9c102_i2c_write(cam, 0xc0, 0x80);
  36
  37         return err;
  38 }
  39
  40
  41 static int tas5110c1b_set_ctrl(struct sn9c102_device* cam,
  42                                const struct v4l2_control* ctrl)
  43 {
  44         int err = 0;
  45
  46         switch (ctrl->id) {
  47         case V4L2_CID_GAIN:
  48                 err += sn9c102_i2c_write(cam, 0x20, 0xf6 - ctrl->value);
  49                 break;
  50         default:
  51                 return -EINVAL;
  52         }
  53
  54         return err ? -EIO : 0;
  55 }
  56
  57
  58 static int tas5110c1b_set_crop(struct sn9c102_device* cam,
  59                                const struct v4l2_rect* rect)
  60 {
  61         struct sn9c102_sensor* s = sn9c102_get_sensor(cam);
  62         int err = 0;
  63         u8 h_start = (u8)(rect->left - s->cropcap.bounds.left) + 69,
  64            v_start = (u8)(rect->top - s->cropcap.bounds.top) + 9;
  65
  66         err += sn9c102_write_reg(cam, h_start, 0x12);
  67         err += sn9c102_write_reg(cam, v_start, 0x13);
  68
  69         /* Don't change ! */
  70         err += sn9c102_write_reg(cam, 0x14, 0x1a);
  71         err += sn9c102_write_reg(cam, 0x0a, 0x1b);
  72         err += sn9c102_write_reg(cam, sn9c102_pread_reg(cam, 0x19), 0x19);
  73
  74         return err;
  75 }
  76
  77
  78 static int tas5110c1b_set_pix_format(struct sn9c102_device* cam,
  79                                      const struct v4l2_pix_format* pix)
  80 {
  81         int err = 0;
  82
  83         if (pix->pixelformat == V4L2_PIX_FMT_SN9C10X)
  84                 err += sn9c102_write_reg(cam, 0x2b, 0x19);
  85         else
  86                 err += sn9c102_write_reg(cam, 0xfb, 0x19);
  87
  88         return err;
  89 }
  90
  91
  92 static const struct sn9c102_sensor tas5110c1b = {
  93         .name = "TAS5110C1B",
  94         .maintainer = "Luca Risolia <luca.risolia@studio.unibo.it>",
  95         .supported_bridge = BRIDGE_SN9C101 | BRIDGE_SN9C102,
  96         .sysfs_ops = SN9C102_I2C_WRITE,
  97         .frequency = SN9C102_I2C_100KHZ,
  98         .interface = SN9C102_I2C_3WIRES,
  99         .init = &tas5110c1b_init,
 100         .qctrl = {
 101                 {
 102                         .id = V4L2_CID_GAIN,
 103                         .type = V4L2_CTRL_TYPE_INTEGER,
 104                         .name = "global gain",
 105                         .minimum = 0x00,
 106                         .maximum = 0xf6,
 107                         .step = 0x01,
 108                         .default_value = 0x40,
 109                         .flags = 0,
 110                 },
 111         },
 112         .set_ctrl = &tas5110c1b_set_ctrl,
 113         .cropcap = {
 114                 .bounds = {
 115                         .left = 0,
 116                         .top = 0,
 117                         .width = 352,
 118                         .height = 288,
 119                 },
 120                 .defrect = {
 121                         .left = 0,
 122                         .top = 0,
 123                         .width = 352,
 124                         .height = 288,
 125                 },
 126         },
 127         .set_crop = &tas5110c1b_set_crop,
 128         .pix_format = {
 129                 .width = 352,
 130                 .height = 288,
 131                 .pixelformat = V4L2_PIX_FMT_SBGGR8,
 132                 .priv = 8,
 133         },
 134         .set_pix_format = &tas5110c1b_set_pix_format
 135 };
 136
 137
 138 int sn9c102_probe_tas5110c1b(struct sn9c102_device* cam)
 139 {
 140         const struct usb_device_id tas5110c1b_id_table[] = {
 141                 { USB_DEVICE(0x0c45, 0x6001), },
 142                 { USB_DEVICE(0x0c45, 0x6005), },
 143                 { USB_DEVICE(0x0c45, 0x60ab), },
 144                 { }
 145         };
 146
 147         /* Sensor detection is based on USB pid/vid */
 148         if (!sn9c102_match_id(cam, tas5110c1b_id_table))
 149                 return -ENODEV;
 150
 151         sn9c102_attach_sensor(cam, &tas5110c1b);
 152
 153         return 0;
 154 }